package com.nowcoder.community.controller;


import com.google.code.kaptcha.Producer;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.service.UserService;
import com.nowcoder.community.util.CommunityConstant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

@Controller
public class LoginController  implements CommunityConstant {
    private static  final Logger LOGGER = LoggerFactory.getLogger(LoginController.class);

    @Autowired
    private UserService userService;
    @Autowired
    private Producer producer;
    //获取注册页面
    @RequestMapping(value = "/register",method = RequestMethod.GET)
    public String getRegisterPage(){
        return "site/register";
    }
    //获取登录页面
    @RequestMapping(value = "/login",method = RequestMethod.GET)
    public String getLoginPage(){
        return "site/login";
    }

    /**
     * 注册*/
    @RequestMapping(value = "/register",method = RequestMethod.POST)
    public String doregister(Model model,User user){
        Map map = userService.register(user);
        if (map == null || map.isEmpty()){
            model.addAttribute("msg","注册成功,我们已向您的邮箱发送激活邮件,请尽快激活");
            model.addAttribute("target","/index");
            return "/site/operate-result";
        }else {
            model.addAttribute("usernameMsg",map.get("usernameMsg"));
            model.addAttribute("passwordMsg",map.get("passwordMsg"));
            model.addAttribute("emailMsg",map.get("emailMsg"));
            return "/site/register";
        }

    }

    /**
     * 邮件激活
     * */
    @RequestMapping(value = "/activation/{userId}/{code}",method = RequestMethod.GET)
    public String activation(Model model, @PathVariable("userId") int userId,@PathVariable("code") String code){
        int result = userService.activation(userId,code);
        if(result == ACTIVATION_SUCCESS){
            model.addAttribute("msg","激活成功,您的账号可以使用了");
            model.addAttribute("target","/login");
        }else if(result == ACTIVATION_REPEAT){
            model.addAttribute("msg","无效操作,您已经激活账号");
            model.addAttribute("target","/index");
        }else {
            model.addAttribute("msg","激活失败,您提供的激活验证码不对");
            model.addAttribute("target","/index");
        }
        return "/site/operate-result";
    }

    /**
     * 获取图形验证码*/
    @RequestMapping(path = "/kaptcha",method = RequestMethod.GET)
    public void getKaptcha(HttpServletResponse response, HttpSession session){
        //生成验证码
        String text = producer.createText();
        BufferedImage image = producer.createImage(text);

        //将验证码存入session
        session.setAttribute("kaptcha",text);

        //将图片输出给浏览器
        response.setContentType("image/png");
        try {
            OutputStream os = response.getOutputStream();
            ImageIO.write(image,"png",os);
        } catch (IOException e) {
            LOGGER.error("响应验证码失败");
        }
    }
}
